COMPARATIVE ANALYSIS OF A G+15 RCC RESIDENTIAL BUILDING WITH AND WITHOUT SHEAR WALL USING E TABS

From the analysis of the G+15 building with and without shear walls, the following conclusions are drawn: • Storey displacement is significantly reduced with the provision of shear walls, especially in the upper storeys, indicating improved structural stiffness and control over lateral movement. • Storey drift values are considerably lower in the model with shear walls, ensuring that the structure satisfies permissible drift limits and performs better under seismic loading. • The structure without shear walls shows higher deformation and irregular drift distribution, making it more vulnerable to seismic effects. • Base shear and overturning moments are effectively resisted in the shear wall model due to increased rigidity and better load transfer mechanism. • Shear walls act as primary lateral load-resisting elements, thereby reducing the load and stress on beams and columns and enhancing overall structural efficiency. • Proper placement of shear walls in both X and Y directions helps in minimizing torsional effects and ensures uniform distribution of seismic forces. • Critical response parameters such as displacement, drift, and overturning are well controlled in the shear wall model, indicating improved seismic performance. • Overall, the study concludes that the G+15 building with shear walls is safer, more stable, and better suited for seismic-resistant design compared to the structure without shear walls. The use of shear walls is essential for enhancing strength, stiffness, and overall performance in earthquake-prone regions.

Earthquake Resistant Design of Structures by S.K. Duggal: Provides practical guidance on the design and detailing of reinforced concrete (RC) shear walls according to Indian Standards (IS codes). •           Dynamics of Structures by A.K. Chopra: Often used for fundamental seismic analysis, including time-history and response spectrum analysis of shear wall systems. •           Bureau of Indian Standards, IS 456: 2000, Plain and Reinforced Concrete – Code of Practice, New Delhi. •           Bureau of Indian Standards, IS 1893: 2016, Criteria for Earthquake Resistant Design of Structures, Bureau of Indian Standards •           Bureau of Indian Standards, IS 875-Part 1: 2013, Code of Practice for Design Loads (other than earthquake) for buildings & structures – Dead Load, Bureau of Indian Standards •           Bureau of Indian Standards, IS 875-Part 2: 2013, Code of Practice for Design Loads (other than earthquake) for buildings & structures – Imposed Load, Bureau of Indian Standards •           Bureau of Indian Standards, IS 875-Part 3: 2015, Code of Practice for Design Loads (other than earthquake) for buildings & structures – Wind Load, Bureau of Indian Standards •           ETABS User Manual, CSI Computers and Structures Inc. • Shear walls improve stiffness, strength, and overall seismic resistance of the building. • The results clearly indicate that shear walls are essential for high-rise buildings in seismic regions.